A professional who tends machines that stretch tow, break tow into staple lengths, and crimp resulting sliver. Responsibilities include:

• Ties rope of filaments to filaments in machine or threads rope through guides and tension rollers, heating plates, breaking rollers, and crimping device and into receiving can.
• Observes operation of machines to detect fibers wrapping around rollers and cuts away tangled fibers.
• Adjusts yardage clock to stop machine when specified amount of fiber is in receiving can.
• Records production data, and writes identification tickets for cans of sliver.
• May tend machine that sets crimp in fiber.